Ammonium Sulfate ((NH₄)₂SO₄) 7783-20-2

Ammonium Sulfate ((NH₄)₂SO₄) is a white crystalline solid with a molecular weight of 132.14 g/mol, produced by reacting ammonia with sulfuric acid. It contains 21% nitrogen and 24% sulfur, making it one of the most widely used dual-nutrient nitrogen-sulfur fertilizers for agriculture.

Ammonium Sulfate is primarily used as a nitrogen and sulfur fertilizer, especially on alkaline soils where it helps lower soil pH while providing essential nutrients. It is also used in water treatment, as a flame retardant component, in the production of ammonium persulfate, in leather tanning, textile dyeing, and in food-grade applications as a dough conditioner and yeast nutrient in baking.

Ammonium Sulfate supplies both nitrogen (21%) and sulfur (24%), unlike urea or ammonium nitrate which provide only nitrogen. Sulfur is essential for protein synthesis and chlorophyll formation. Ammonium sulfate is ideal for sulfur-loving crops like rice, tea, potatoes, corn, and canola. Additionally, its acidifying effect makes it particularly beneficial on high-pH alkaline soils where micronutrient availability is often limited.

Store in a cool, dry, well-ventilated area away from strong bases and oxidizers. The product is hygroscopic under humid conditions above 80% relative humidity and should be kept in tightly sealed bags. It has good storage properties at moderate humidity. Under proper storage conditions, shelf life is 12-24 months. Avoid mixing with alkaline materials such as lime or basic slag, as this can cause ammonia loss.

Yes, XRD Chemical supplies food-grade Ammonium Sulfate that meets FCC and food-grade specifications. It is used in baking as a dough conditioner, as a yeast nutrient in fermentation processes, and as an acidity regulator (E517) in food processing. Contact us for food-grade availability and documentation.